7 in 1 Multi-function Water Quality Monitor TPH02159 Multi-function Water Quality Monitor, can measure PH/ORP/TDS/EC/CF/temperature/humidity, European/American plug, high-precision LCD digital display, 1s fast measurement, easy to use. EC-PPM-CF/ PH-ORP/C-F switch, detachable electrode, suitable for Fish tank, Aquarium, Mariculture, Swimming Pool, Drinking water, Laboratory, etc.P.S:1.PH value: indicates the strength of acidity and alkalinity in the water.2. The EC value is used to measure the soluble salt concentration in the solution.3. TDS: The lower the TDS value, the lower the total dissolved solids content in the water and the purer the water quality.4.ORP: oxidation reduction potential.Specifications:1.Range:EC: 0.00-20.00mS/cmTDS: 0-9990ppmCF: 0.1-199.9CFH: 0.01-14.00ORP: -1200mV-+1200mVHumidit(air): 10%RH-99%RHTemp: 0.1C-60.0C; 32.1F-140.0F2.Resolution:EC: 0.01mS/cmTDS: 1ppmCF: 0.1CFH: 0.01HORP: 1mVTemp: 0.1C/0.1F3.Accuracy:EC/PPM/CF: +2%F.S.pH: 0.05pHORP: 5 mVmp: 0.54. ATC: 0.1-60.05. Electrode: Replaceable electrode; Low battery indicator6.Backlights: With Backlights7.Power Supply: Battery: 4 * 1.2V Ni-MH rechargeable battery 8. Adapter: with adapter, 220V or 110V optionalPackage Included:1pcs Monitor3pcs pH buffer powde1pcs English instruction1pcs Adapter1pcs Electrode1pcs package box TDS: 0-9999ppm 0-50 High purity50-100 Higher purity100-300 Purity is average300-600 Will form scale600-1000 Poor tasteAbove 1000 is not suitable for drinking water ORP: -1200mV~ + 1200mV ORP value of drinking water +150-550mVMariculture ORP value: + 300-450mvORP value of swimming pool: +650mV CF: 0.1-199.9CF Nutrient solution is the key to soilless cultivation different crops require different nutrient solution formulas Function switching : MODE: EC-PPM-CF (switching)MODE: PH-ORP (switching)C/F: C-F (switching) TPH02159 Package Included:1pcs Monitor3pcs pH buffer powde1pcs English instruction1pcs AdapterEU1pcs Electrode1pcs package box TPH02159-US Package Included:1pcs Monitor3pcs pH buffer powde1pcs English instruction1pcs AdapterUS1pcs Electrode1pcs package box TPH01682 Package Included1pcs Monitor3pcs pH buffer powde1pcs English instruction1pcs Adapter (EU)1pcs Electrode1pcs package box1pcs ORP buffer powde1pcs 1413us/cm/25ml calibration solution TPH01683 Package Included1pcs Monitor3pcs pH buffer powde1pcs English instruction1pcs Adapter (US)1pcs Electrode1pcs package box1pcs ORP buffer powde1pcs 1413us/cm/25ml calibration solution RS485-3178RS485 US 120V RS485 US 120V Package Included:1pcs RS485 US 120V Monitor3pcs pH buffer powde1pcs English instruction1pcs AdapterUS1pcs Electrode1pcs package box RS485-3178-EURS485 EU 220V RS485 EU 220V Package Included:1pcs RS485 EU 220V Monitor3pcs pH buffer powde1pcs English instruction1pcs AdapterEU1pcs Electrode1pcs package box RS485-TPH01683A RS485 US 120V A RS485 US 120V Package Included1pcs RS485 US 120V Monitor3pcs pH buffer powde1pcs English instruction1pcs Adapter (US)1pcs Electrode1pcs package box1pcs ORP buffer powde1pcs 1413us/cm/25ml calibration solution RS485-TPH01682B RS485 EU 220V Package Included1pcs RS485 EU 220V Monitor3pcs pH buffer powde1pcs English instruction1pcs Adapter (EU)1pcs Electrode1pcs package box1pcs ORP buffer powde1pcs 1413us/cm/25ml calibration solution TPH02159-Ponly probe Package Included1pcs probe Operation 1.Connect the electrode to the meter.2.Remove the electrode protective cap3.Clean the electrode with distilled water and wipe clean the spare water.4.Turn on the meter by pressing "ON/OFF" button 5.Immerse the electrode in the solution6.Lightly shake the electrode, read the testing when the numeric stabilized.Press "C/'F" to convert temperature . Press the "MODE" button under the left screen to convert different mode between EC.ppm and CF .Press the "MODE"button under the middle screen to convert different mode between pH and ORP7.Press the "ON/OFF" button to shut off the instrument.Clean the electrode with pure water, cover the electrode protective cap Calibration pH MODE Calibration 1.The pH meter must be re-calibrated before using.2.Turn on the meter by pressing ON/OFF button3.Dissolve each buffer solution into 3 cups which is filled with 250ml distilled water4.Press "MODE" button on "pH/ORP" screen to shift to pH mode5.Immerse the electrode into the pH 6.86 solution.(under the temperature of 25)Press the "CAL" (calibration) button for 5 seconds and release.-Display will start flashing 6.86 -Wait until the display stops flashingClean the electrode with distilled water and dry it with filter paper.6.Immerse the electrode int